[PATCH] D50121: [PowerPC] Do not round values prior to converting to integer

[Nemanja Ivanovic via Phabricator via llvm-commits]

nemanjai created this revision.
nemanjai added reviewers: cuviper, tstellar, hfinkel.
Herald added a subscriber: kbarton.

As pointed out in https://bugs.llvm.org/show_bug.cgi?id=38342, adding the FP_ROUND prior to converting from double precision to 4-byte integers causes loss of precision. This patch fixes that bug ensuring that we do not need to scalarize these conversions.


Repository:
  rL LLVM

https://reviews.llvm.org/D50121

Files:
  lib/Target/PowerPC/PPCISelLowering.cpp
  lib/Target/PowerPC/PPCInstrVSX.td
  test/CodeGen/PowerPC/build-vector-tests.ll

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